There are total 18 hours or 1080 minutes from 7am to 1am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 7PM to 8AM | 11AM to 9PM | 7PM to 4PM |
| 11PM to 9PM | 8PM to 12AM | 8PM to 12AM |
| 6AM to 8AM | 9AM to 8AM | 9PM to 10AM |
| 11PM to 11AM | 8AM to 3AM | 11PM to 10PM |
| 7PM to 8AM | 8PM to 6AM | 5PM to 1PM |
| 5AM to 1AM | 1PM to 7AM | 2PM to 2AM |
